General Purpose Hydraulic Ram Single Acting Hollow Plunger Steel Nominal Capacity 12 ton Max Push Capacity 12 ton Stroke Length 5/16 in Nominal Stroke Length 5/16 in Effective Push Area 2.76 sq in Max Pressure 10 000 psi Oil Capacity Push 0.86 cu in Retracted Height 2.19 in Extended Height 2.5 in Outside Dia 2.75 in Plunger Dia 1.38 in Plunger Thread Size 3/4 In.-16 Collar Thread Size 2-3/4 In.-16 Base Bolt Circle Dia 2 in Base Mounting Thread Size 5/16-18